Fluorobenzene diazotization solid automatic feeding device

Abstract

The invention provides an automatic fluorobenzene diazotization solid feeding device, and belongs to the technical field of diazo chemical production devices. Comprising a feeding assembly and a reaction kettle, the feeding assembly is installed at the top of the reaction kettle, an output port in the bottom of the feeding assembly is communicated with the interior of the reaction kettle, the feeding assembly comprises a supporting cylinder, the supporting cylinder is fixedly connected with the reaction kettle, and the bottom of the supporting cylinder penetrates through the top of the reaction kettle in a sealed mode. By arranging the crushing mechanism and the feeding assembly, blocky sodium nitrite in the crushing cylinder is crushed and conveyed into the rotational flow cylinder, in the conveying process, by arranging the multiple heating components, the blocky sodium nitrite is prevented from absorbing water and caking, meanwhile, redundant water is evaporated, and meanwhile, by means of the change of air pressure in the rotational flow cylinder, the sodium nitrite in the crushing cylinder is crushed and conveyed into the rotational flow cylinder. And sodium nitrite in the rotational flow cylinder is conveyed into the material collecting cylinder to be collected and used, so that the problems that the existing sodium nitrite feeding efficiency is low and certain potential safety hazards exist are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of diazo chemical production devices, and particularly relates to a fluorobenzene diazotization solid automatic feeding device. Background Art

[0002] Industrial sodium nitrite (referred to as sodium nitrite) is one of the main raw materials for fluorination production. It contains a certain amount of moisture and has the characteristics of being easy to absorb moisture and cake, and poor fluidity. It not only easily blocks the feeding pipeline, valve, etc., but also nitrogen oxides escape, affecting the operating environment.

[0003] Therefore, sodium nitrite, as a solid raw material, is easy to absorb moisture and cake, resulting in easy blockage during the feeding process. It requires manual slow feeding, which reduces the feeding efficiency. At the same time, during the diazotization reaction, sodium nitrite needs to be poured evenly. Manual feeding is difficult to meet the usage requirements. In addition, sodium nitrite has certain toxicity, and manual feeding has potential safety hazards. With the increasing demand for products in the industry, improving the automation level of the process and reducing the manpower and material resources in the product production process are urgent problems to be solved. Therefore, the present application provides a fluorobenzene diazotization solid automatic feeding device to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a fluorobenzene diazotization solid automatic feeding device. By setting a crushing mechanism and a feeding component, the lumpy sodium nitrite in the crushing cylinder is broken and transported to the cyclone cylinder. During the transportation process, a plurality of heating components are set to prevent it from absorbing moisture and caking, and at the same time evaporate the excess moisture. At the same time, using the change of air pressure in the cyclone cylinder, the sodium nitrite in the cyclone cylinder is transported to the aggregate cylinder for collection and use, so as to solve the problems of low feeding efficiency and certain safety hazards of the existing sodium nitrite.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A fluorobenzene diazotization solid automatic feeding device includes a feeding component and a reaction kettle. The feeding component is installed on the top of the reaction kettle, and the output port at the bottom of the feeding component is communicated with the inside of the reaction kettle. The feeding component includes a support cylinder, the support cylinder is fixedly connected to the reaction kettle, and the bottom of the support cylinder penetrates the top of the reaction kettle in a sealed manner. A feeding component is arranged inside the support cylinder, and the feeding component can transport powdery materials. A crushing mechanism is arranged at the top of the support cylinder. The crushing mechanism can crush solid nodular materials. The crushing mechanism includes an execution component. A material receiving cylinder is installed at the bottom of the execution component. A bottom cylinder is fixedly installed at the bottom of the material receiving cylinder. A discharging funnel is fixedly installed on the inner wall of the bottom of the bottom cylinder. There are six groups of discharging funnels, and they are arranged in a circumferential array. The bottoms of the six groups of discharging funnels all penetrate the bottom of the bottom cylinder, and the bottom of the bottom cylinder is fixedly connected to the top of the support cylinder.

[0006] Optionally, the crushing mechanism includes an execution member, a material receiving cylinder is installed at the bottom of the execution member, a bottom cylinder is fixedly installed at the bottom of the material receiving cylinder, a discharge funnel is fixedly installed on the inner wall of the bottom of the bottom cylinder, there are six groups of the discharge funnels, and they are arranged in a circumferential array. The bottoms of the six groups of discharge funnels all penetrate through the bottom of the bottom cylinder, and the bottom of the bottom cylinder is fixedly connected to the top of the support cylinder.

[0007] Optionally, a funnel-shaped material tray two is fixedly installed at the top of the material receiving cylinder, a conduit hole two is formed on the peripheral wall of the funnel-shaped material tray two, there are multiple groups of the conduit holes two, and they are evenly distributed on the peripheral wall of the funnel-shaped material tray two. A chassis is fixedly installed on the inner wall of the bottom of the material receiving cylinder.

[0008] Optionally, the execution member includes a crushing cylinder, a feeding channel is formed on the side wall at the top of the crushing cylinder, a funnel-shaped material tray one is fixedly installed at the bottom of the crushing cylinder, a conduit hole one is formed on the peripheral wall of the funnel-shaped material tray one, there are multiple groups of the conduit holes one, and they correspond to the conduit holes two one by one.

[0009] Optionally, one side wall of the funnel-shaped material tray one is fixedly connected to the top of the funnel-shaped material tray two by bolts, a conduit is fixedly installed on the inner wall of the conduit hole one, and the outer wall of the conduit is fixedly connected to the inner wall of the corresponding conduit hole two.

[0010] Optionally, a motor is fixedly installed at the top of the crushing cylinder, a crushing rod is rotatably connected to the inner wall of the top of the crushing cylinder, and the output end of the motor is fixedly connected to the end wall of the crushing rod. The crushing blades at the bottom of the crushing rod are in movable contact with the inner wall of the funnel-shaped material tray one, and multiple groups of regular triangular grooves are formed on the crushing blades at the bottom of the crushing rod.

[0011] Optionally, multiple groups of conveying pipes are fixedly installed on the outer peripheral wall of the top of the chassis, and the number of the conveying pipes is the same as the number of the conduit holes two. The top of the conveying pipe is fixedly connected to the corresponding conduit, the bottom of the conveying pipe penetrates through the chassis, and the top of the discharge funnel is communicated with the bottom pipe orifices of the corresponding four groups of conveying pipes.

[0012] Optionally, a heating plate is fixedly installed on the inner wall of the top of the funnel-shaped material tray two, an inner spiral heating wire is fixedly installed at the center of the top of the chassis, and an outer spiral heating wire is fixedly installed on the outer side of the inner wall of the bottom of the material receiving cylinder. Neither the outer spiral heating wire nor the inner spiral heating wire is in contact with the conveying pipe.

[0013] Optionally, the feeding assembly includes a cyclone cylinder, the outer wall of the cyclone cylinder is fixedly connected to the inner wall of the support cylinder, an air extraction pipe is fixedly installed at the top of the cyclone cylinder, and the air extraction pipe penetrates through one side of the support cylinder. An aggregate cylinder is fixedly installed at the bottom of the cyclone cylinder, a metering solenoid valve is fixedly installed at the bottom orifice of the aggregate cylinder, and the valve orifice of the metering solenoid valve is communicated with the inside of the reaction kettle. A wind blocking block is fixedly installed on the inner wall of the top of the aggregate cylinder, and the wind blocking block is located at the center of the bottom of the cyclone cylinder.

[0014] Optionally, an aggregate cover is fixedly installed at the bottom of the bottom cylinder, and the bottom barrel openings of the discharge funnels are all located inside the aggregate cover. A material conveying pipe is fixedly installed at the bottom of the aggregate cover. The top pipe orifice of the material conveying pipe communicates with the inside of the aggregate cover. The bottom pipe orifice of the material conveying pipe fixedly penetrates through one side of the cyclone cylinder and communicates with the inside of the cyclone cylinder.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up a crushing mechanism, the combined action of the funnel-shaped material tray I at the bottom of the crushing cylinder and the crushing rod is used to break up the lumpy sodium nitrite in the crushing cylinder. At the same time, under the transportation action of the conduit and the material conveying pipe, the sodium nitrite in the crushing cylinder is transported to the discharge funnel. At the same time, the heating plate, the outer spiral heating wire and the inner spiral heating wire can ensure that the sodium nitrite will not absorb water and caking during the transportation process, and at the same time evaporate the water in the sodium nitrite to make it powdery, avoiding blockage in the conduit and the material conveying pipe. At the same time, due to the angular setting between the end pipe orifice of the material conveying pipe and the center line of the discharge funnel, the powdery sodium nitrite will be obliquely injected into the discharge funnel, and the negative pressure generated by the air pump can generate a centrifugal force in the discharge funnel, so that the powdery sodium nitrite in the discharge funnel can move spirally downward along the inner wall of the discharge funnel and fall into the aggregate cover, avoiding blockage of the powdery sodium nitrite in the discharge funnel.

[0016] By setting up a feeding assembly, the negative pressure generated by the air pump in the cyclone cylinder can act on the material conveying pipe, so as to suck the powdery sodium nitrite falling in the aggregate cover into the cyclone cylinder through the material conveying pipe. At this time, since the cyclone cylinder is set to be wider at the top and narrower at the bottom, that is, the space in the cyclone cylinder is in a shrinking state from top to bottom, a pressure difference is formed in the cyclone cylinder, that is, the pressure in the cyclone cylinder increases sequentially from top to bottom. Under the action of the negative pressure, the air flow in the cyclone cylinder makes a spiral motion and generates a centrifugal force, that is, most of the rotating air flow spirally moves downward along the wall of the cyclone cylinder towards the aggregate cylinder. In addition, the powdery sodium nitrite entering the cyclone cylinder has a relatively large specific gravity, and the powdery sodium nitrite is separated by the centrifugal force and scattered on the inner wall of the cyclone cylinder. Once the powdery sodium nitrite contacts the inner wall of the cyclone cylinder, it loses its inertial force and falls along the wall surface by the momentum of the downward axial velocity near the inner wall of the cyclone cylinder. When the powdery sodium nitrite moves to the high-pressure area, the powdery sodium nitrite will get rid of the spiral motion and fall into the aggregate cylinder along the inner wall of the cyclone cylinder under the action of gravity. At the same time, the rotating downward outer swirling air flow continuously flows into the central part of the cyclone cylinder during the downward process, forming a centripetal radial air flow. When it contacts the wind blocking block, this part of the air flow constitutes a rotating upward inner swirling air flow, and the rotation directions of the inner and outer swirling air flows are the same. Finally, the inner swirling air flow is extracted by the air extraction pipe. When it is necessary to put sodium nitrite into the reaction kettle for reaction, by opening the metering solenoid valve, powdery sodium nitrite can be quantitatively put in. Description of the Drawings

[0017] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0018] Figure 1 It is a schematic three-dimensional structure diagram of a solid automatic feeding device for fluorobenzene diazotization; Figure 2 It is a schematic structure diagram of the feeding assembly; Figure 3 It is a schematic installation diagram of the feeding assembly in the support cylinder; Figure 4 It is an exploded view of the feeding assembly; Figure 5 It is a cross-sectional view of the feeding assembly; Figure 6 It is a schematic connection structure diagram of the aggregate cover and the cyclone cylinder; Figure 7 It is a front elevation exploded view of the crushing mechanism; Figure 8 It is a bottom elevation exploded view of the crushing mechanism; Figure 9 It is a schematic structure diagram of the actuating member; Figure 10 It is a schematic installation diagram of the conduit and the first conduit hole; Figure 11 It is a schematic structure diagram of the crushing rod; Figure 12 It is a schematic installation diagram of the bottom cylinder and the material storage cylinder; Figure 13 It is a schematic internal structure diagram of the material storage cylinder; Figure 14 It is a schematic installation diagram of the chassis and the material storage cylinder; Figure 15 It is an exploded view of the internal structure of the material storage cylinder; Figure 16 It is a schematic planar principle diagram of the crushing mechanism.

[0019] Reference numerals: 100, Feeding Component; 110, Support Cylinder; 120, Crushing Mechanism; 130, Execution Member; 131, Crushing Cylinder; 132, Feeding Channel; 133, Funnel-shaped Tray 1; 134, Duct Hole 1; 135, Duct; 136, Crushing Rod; 137, Motor; 140, Material Holding Cylinder; 141, Funnel-shaped Tray 2; 142, Duct Hole 2; 143, Heating Plate; 144, Chassis; 145, Feed Pipe; 146, Outer Spiral Heating Wire; 147, Inner Spiral Heating Wire; 150, Bottom Cylinder; 151, Discharge Hopper; 160, Feeding Component; 161, Cyclone Cylinder; 162, Exhaust Duct; 163, Aggregate Cylinder; 164, Wind-blocking Block; 165, Metering Solenoid Valve; 166, Aggregate Cover; 167, Material Transfer Pipe; 200, Reactor.

[0020] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed Embodiments

[0021] The following describes in detail a solid automatic feeding device for fluorobenzene diazotization and its detection method provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0022] It should be noted that in the specification, references to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, implementing such features, structures, or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0023] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0024] It will be understood that the meanings of "on", "above" and "over" in the present invention should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being on something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but may also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0025] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be interpreted accordingly.

[0026] As Figures 1 to 16 shown, an embodiment of the present invention provides a fluorobenzene diazotization solid automatic feeding device, which includes a feeding assembly 100 and a reaction kettle 200. The feeding assembly 100 is installed on the top of the reaction kettle 200, and the output port at the bottom of the feeding assembly 100 is communicated with the inside of the reaction kettle 200. The feeding assembly 100 includes a support cylinder 110. The support cylinder 110 is fixedly connected to the reaction kettle 200. The reaction kettle 200 supports the support cylinder 110, and the bottom of the support cylinder 110 penetrates through the top of the reaction kettle 200 in a sealed manner. The materials in the feeding assembly 100 can fall into the reaction kettle 200 to participate in the reaction. A feeding component 160 is arranged inside the support cylinder 110, and a crushing mechanism 120 is arranged on the top of the support cylinder 110; the crushing mechanism 120 can crush solid nodular materials. By the combined action of the funnel-shaped tray 133 at the bottom of the crushing cylinder 131 and the crushing rod 136, the lumpy sodium nitrite in the crushing cylinder 131 can be broken; the feeding component 160 can transport powdery materials. By the transportation action of the conduit 135 and the feeding pipe 145, the sodium nitrite in the crushing cylinder 131 can be transported into the discharging funnel 151. At the same time, by using the heating plate 143, the outer spiral heating wire 146 and the inner spiral heating wire 147, it can be ensured that the sodium nitrite will not absorb water and cake during the transportation process, and at the same time, the water in the sodium nitrite is evaporated to make it powdery.

[0027] As Figure 8 and 12 to Figure 16As shown in the figure, the crushing mechanism 120 includes an execution member 130. A material receiving cylinder 140 is installed at the bottom of the execution member 130. A bottom cylinder 150 is fixedly installed at the bottom of the material receiving cylinder 140. The bottom cylinder 150 can provide support for the material receiving cylinder 140. A discharge funnel 151 is fixedly installed on the inner wall of the bottom of the bottom cylinder 150. The bottom cylinder 150 supports multiple discharge funnels 151. There are six discharge funnels 151, and they are arranged in a circumferential array. The bottoms of the six discharge funnels 151 all penetrate through the bottom of the bottom cylinder 150. The bottom of the bottom cylinder 150 is fixedly connected to the top of the support cylinder 110. The support cylinder 110 provides support for the bottom cylinder 150. A funnel-shaped material tray two 141 is fixedly installed at the top of the material receiving cylinder 140. The material receiving cylinder 140 provides support for the funnel-shaped material tray two 141. A conduit hole two 142 is formed on the peripheral wall of the funnel-shaped material tray two 141. There are multiple conduit holes two 142, and they are evenly distributed on the peripheral wall of the funnel-shaped material tray two 141. A chassis 144 is fixedly installed on the inner wall of the bottom of the material receiving cylinder 140. The material receiving cylinder 140 provides support for the chassis 144. The execution member 130 includes a crushing cylinder 131. A feeding channel 132 is formed on the side wall at the top of the crushing cylinder 131. Blocky sodium nitrite can be added into the crushing cylinder 131 through the feeding channel 132. A funnel-shaped material tray one 133 is fixedly installed at the bottom of the crushing cylinder 131. A conduit hole one 134 is formed on the peripheral wall of the funnel-shaped material tray one 133. There are multiple conduit holes one 134, and they correspond to the conduit holes two 142 one by one. The aperture of the conduit hole one 134 is smaller, and only sodium nitrite meeting the diameter requirement can pass through. The side wall of the funnel-shaped material tray one 133 is fixedly connected to the top of the funnel-shaped material tray two 141 by bolts. The funnel-shaped material tray one 133 provides support for the funnel-shaped material tray two 141. A conduit 135 is fixedly installed on the inner wall of the conduit hole one 134. The outer wall of the conduit 135 is fixedly connected to the inner wall of the corresponding conduit hole two 142. The conduit 135 plays a transportation role and can transport the powdered sodium nitrite in the funnel-shaped material tray one 133 into the conveying pipe 145. Multiple conveying pipes 145 are fixedly installed on the outer peripheral wall at the top of the chassis 144, and the number of the conveying pipes 145 is the same as the number of the conduit holes two 142. The top of the conveying pipe 145 is fixedly connected to the corresponding conduit 135. The top pipe orifice of the conveying pipe 145 is communicated with the conduit 135. The bottom of the conveying pipe 145 penetrates through the chassis 144. The bottom pipe orifice of the conveying pipe 145 is arranged at an angle with the chassis 144, which can enable the powdered sodium nitrite entering the discharge funnel 151 to contact the inner wall of the discharge funnel 151. The top of the discharge funnel 151 is communicated with the bottom pipe orifices of the corresponding four conveying pipes 145. In the present invention, after the blocky sodium nitrite in the crushing cylinder 131 is broken by the crushing rod 136, it enters the conveying pipe 145 through the conduit 135. When the powdered sodium nitrite in the conveying pipe 145 enters the discharge funnel 151 under the action of negative pressure, due to the angular setting between the end pipe orifice of the conveying pipe 145 and the center line of the discharge funnel 151, the powdered sodium nitrite will be obliquely injected into the discharge funnel 151. At the same time, the negative pressure generated by the air pump can generate a centrifugal force in the discharge funnel 151,Enable the powdered sodium nitrite in the feeding hopper 151 to move spirally downward along the inner wall of the feeding hopper 151 and fall into the aggregate cover 166, preventing the powdered sodium nitrite from clogging in the feeding hopper 151.

[0028] As Figures 9 to 11 shown, a motor 137 is fixedly installed at the top of the crushing cylinder 131. The crushing cylinder 131 provides support for the motor 137. The inner wall of the top of the crushing cylinder 131 is rotatably connected to a crushing rod 136, and the output end of the motor 137 is fixedly connected to the end wall of the crushing rod 136. The crushing blades at the bottom of the crushing rod 136 are in movable contact with the inner wall of the funnel-shaped tray 133. The crushing blades at the bottom of the crushing rod 136 can crush the lumpy sodium nitrite on the funnel-shaped tray 133 into powder. A plurality of groups of regular triangular grooves are formed on the crushing blades at the bottom of the crushing rod 136. When the crushing blades at the bottom of the crushing rod 136 contact the lumpy sodium nitrite, after the lumpy sodium nitrite is broken by the crushing blades, it can pass through the triangular grooves on the crushing blades and then pass through the conduit holes 134 on the funnel-shaped tray 133 and enter the conduit 135.

[0029] In this embodiment, an external air pump is connected through the air extraction pipe 162 to generate negative pressure in the cyclone cylinder 161. Through the connection function of the material transfer pipe 167, negative pressure can be synchronously generated in the crushing mechanism 120. At this time, sodium nitrite is used as a diazotization reagent, and lumpy sodium nitrite is added into the crushing cylinder 131 through the feeding chute 132. The motor 137 is driven to drive the crushing rod 136 to rotate, so that the crushing blades at the bottom of the crushing rod 136 can break the lumpy sodium nitrite. At the same time, the triangular grooves formed on the crushing blades have a screening function, which only allows powdered sodium nitrite to pass through. At the same time, with the negative pressure generated by the air pump, the powdered sodium nitrite can enter the conveying pipe 145 through the conduit 135 and enter the feeding hopper 151 through the conveying pipe 145.

[0030] As Figures 13 to 15 shown, a heating plate 143 is fixedly installed on the inner wall of the top of the funnel-shaped tray 2 141. The funnel-shaped tray 2 141 provides support for the heating plate 143. At the same time, the heating plate 143 can heat the material in the conduit 135. An inner spiral heating wire 147 is fixedly installed at the center of the top of the chassis 144. The chassis 144 provides support for the inner spiral heating wire 147. An outer spiral heating wire 146 is fixedly installed on the outer side of the inner wall of the bottom of the material holding cylinder 140. The material holding cylinder 140 provides support for the outer spiral heating wire 146. Both the outer spiral heating wire 146 and the inner spiral heating wire 147 can heat the material in the conveying pipe 145, and neither the outer spiral heating wire 146 nor the inner spiral heating wire 147 contacts the conveying pipe 145. Such a setting can prevent the outer spiral heating wire 146 and the inner spiral heating wire 147 from causing thermal damage to the surface of the conveying pipe 145.

[0031] In this embodiment, the heating plate 143 can heat the conduit 135, and at the same time, the outer spiral heating wire 146 and the inner spiral heating wire 147 can heat the material conveying pipe 145, so as to ensure that the powdered sodium nitrite is heated in the conduit 135 and the material conveying pipe 145, avoid its caking due to water absorption, and at the same time evaporate the moisture inside the powdered sodium nitrite, so that it always remains in powder form.

[0032] As Figures 2 to 7 shown, the feeding assembly 160 includes a cyclone cylinder 161, as shown in the accompanying drawings of the specification Figure 6As shown in the figure, the cyclone tube 161 is designed in a horn shape that is wider at the top and narrower at the bottom, enabling the space inside the cyclone tube 161 to shrink from top to bottom, thereby forming a pressure difference inside the cyclone tube 161, that is, the pressure increases sequentially from top to bottom inside the cyclone tube 161. Under the action of negative pressure, the air flow inside the cyclone tube 161 moves in a spiral motion and generates a centrifugal force. That is, most of the rotating air flow spins downward along the wall of the cyclone tube 161 in a spiral shape towards the aggregate tube 163. The outer wall of the cyclone tube 161 is fixedly connected to the inner wall of the support tube 110, and the support tube 110 provides support for the cyclone tube 161. A suction duct 162 is fixedly installed at the top of the cyclone tube 161, and the suction duct 162 penetrates through one side of the support tube 110. The support tube 110 supports the suction duct 162. An aggregate tube 163 is fixedly installed at the bottom of the cyclone tube 161. The aggregate tube 163 can collect the powdered sodium nitrite that falls from the cyclone tube 161. A metering solenoid valve 165 is fixedly installed at the bottom opening of the aggregate tube 163. When it is necessary to use powdered sodium nitrite to participate in the reaction, the external air pump is closed and the metering solenoid valve 165 is opened, and then the powdered sodium nitrite can be quantitatively input. Moreover, the valve port of the metering solenoid valve 165 communicates with the inside of the reaction kettle 200. A wind-blocking block 164 is fixedly installed on the inner wall of the top of the aggregate tube 163, and the wind-blocking block 164 is located at the center of the bottom of the cyclone tube 161. The wind-blocking block 164 can block the movement of the air cyclones inside and outside the cyclone tube 161, and an inner air cyclone can be formed at the wind-blocking block 164. The rotating outer spiral air flow, during the downward movement, continuously flows into the central part inside the cyclone tube 161, forming a centripetal radial air flow. When it contacts the wind-blocking block 164, this part of the air flow constitutes a rotating upward inner spiral flow, and the rotating directions of the inner and outer spiral flows are the same. Finally, the inner spiral flow gas is extracted by the suction duct 162. An aggregate cover 166 is fixedly installed at the bottom of the bottom cylinder 150. The bottom cylinder 150 plays a guiding role for the aggregate cover 166. At the same time, the aggregate cover 166 is in sealed contact with the bottom of the bottom cylinder 150, and the bottom openings of the discharge funnels 151 are all located inside the aggregate cover 166. Under the action of the negative pressure inside the cyclone tube 161, all the materials in the discharge funnel 151 can fall into the aggregate cover 166 for collection. A material transfer pipe 167 is fixedly installed at the bottom of the aggregate cover 166. The aggregate cover 166 provides support for the material transfer pipe 167. The top pipe orifice of the material transfer pipe 167 communicates with the inside of the aggregate cover 166. The materials in the aggregate cover 166 can enter the material transfer pipe 167. The bottom pipe orifice of the material transfer pipe 167 fixedly penetrates through one side of the cyclone tube 161. Under the action of the negative pressure, the materials in the aggregate cover 166 can fall into the cyclone tube 161 through the guiding action of the material transfer pipe 167 and communicate with the inside of the cyclone tube 161. The material transfer pipe 167 located inside the cyclone tube 161 is tangent to the outer wall of the cyclone tube 161, so that when the materials enter the cyclone tube 161 through the material transfer pipe 167, their motion state can change from a linear motion inside the material transfer pipe 167 to a circular motion inside the cyclone tube 161.

[0033] In this embodiment, the negative pressure generated by the air pump in the cyclone cylinder 161 can act on the material conveying pipe 167, so as to suck the powdered sodium nitrite falling in the aggregate cover 166 into the cyclone cylinder 161 through the material conveying pipe 167. Since the powdered sodium nitrite entering the cyclone cylinder 161 has a relatively large specific gravity, the powdered sodium nitrite is separated by centrifugal force and scattered on the inner wall of the cyclone cylinder 161. Once the powdered sodium nitrite contacts the inner wall of the cyclone cylinder 161, it loses its inertial force and falls along the wall surface by the momentum of the downward axial velocity near the inner wall of the cyclone cylinder 161. When the powdered sodium nitrite moves to the high-pressure area (the bottom area of the cyclone cylinder 161), the powdered sodium nitrite will get rid of the spiral movement and fall into the aggregate cylinder 163 along the inner wall of the cyclone cylinder 161 under the action of gravity. When it is necessary to put sodium nitrite into the reaction kettle 200 for reaction, by opening the metering solenoid valve 165, powdered sodium nitrite can be quantitatively put in.

[0034] The working principle of the technical solution provided by the present invention is as follows: By connecting an external air pump to the air extraction pipe 162, a negative pressure is generated in the cyclone cylinder 161. And due to the connection effect of the material conveying pipe 167, a negative pressure can be synchronously generated in the crushing mechanism 120. At this time, sodium nitrite is used as the diazotization reagent, and lumpy sodium nitrite is added into the crushing cylinder 131 through the feeding channel 132. The driving motor 137 drives the crushing rod 136 to rotate, so that the crushing blades at the bottom of the crushing rod 136 can break the lumpy sodium nitrite. At the same time, the triangular grooves formed on the crushing blades have a screening effect, and only powdered sodium nitrite can pass through. Meanwhile, with the negative pressure generated by the air pump, the powdered sodium nitrite can enter the material conveying pipe 145 through the conduit 135 and enter the discharging funnel 151 through the material conveying pipe 145. During this process, the heating plate 143 can heat the conduit 135.

[0035] At the same time, the outer spiral heating wire 146 and the inner spiral heating wire 147 can heat the material conveying pipe 145, so as to ensure that the powdered sodium nitrite is heated in the conduit 135 and the material conveying pipe 145, avoid its caking due to water absorption, and at the same time evaporate the moisture inside the powdered sodium nitrite, so that it always remains in a powdery state. When the powdered sodium nitrite in the material conveying pipe 145 enters the discharging funnel 151 under the action of negative pressure, due to the angular setting between the end pipe orifice of the material conveying pipe 145 and the center line of the discharging funnel 151, the powdered sodium nitrite will be obliquely injected into the discharging funnel 151. At the same time, the negative pressure generated by the air pump can generate a centrifugal force in the discharging funnel 151, so that the powdered sodium nitrite in the discharging funnel 151 can move spirally downward along the inner wall of the discharging funnel 151 and fall into the aggregate cover 166, avoiding the blockage of the powdered sodium nitrite in the discharging funnel 151.

[0036] The negative pressure generated by the air pump within the cyclone tube 161 can act on the material conveying pipe 167, thereby sucking the powdered sodium nitrite that has fallen into the aggregate cover 166 into the cyclone tube 161 through the material conveying pipe 167. At this time, since the cyclone tube 161 is arranged to be wider at the top and narrower at the bottom, that is, the space within the cyclone tube 161 contracts from top to bottom, a pressure difference is thus formed within the cyclone tube 161, namely, the pressure increases successively from top to bottom within the cyclone tube 161. Under the action of the negative pressure, the air flow within the cyclone tube 161 moves in a spiral motion and generates a centrifugal force. That is, the vast majority of the rotating air flow spirals downward along the wall of the cyclone tube 161 towards the aggregate tube 163. In addition, since the powdered sodium nitrite that enters the cyclone tube 161 has a relatively large specific gravity, the powdered sodium nitrite is separated by the centrifugal force and scattered on the inner wall of the cyclone tube 161. Once the powdered sodium nitrite comes into contact with the inner wall of the cyclone tube 161, it loses its inertial force and falls along the wall surface relying on the momentum of the downward axial velocity near the inner wall of the cyclone tube 161. When the powdered sodium nitrite moves to the high-pressure area (the bottom area of the cyclone tube 161), the powdered sodium nitrite will break away from the spiral motion and fall into the aggregate tube 163 along the inner wall of the cyclone tube 161 under the action of gravity. At the same time, the rotating downward outer swirling air flow continuously flows into the central part within the cyclone tube 161 during the downward process, forming a centripetal radial air flow. When it contacts the wind-blocking block 164, this part of the air flow constitutes a rotating upward inner swirling flow, and the rotating directions of the inner and outer swirling flows are the same. Finally, the inner swirling flow gas is extracted by the air extraction pipe 162. When it is necessary to input sodium nitrite into the reaction kettle 200 for reaction, by opening the metering solenoid valve 165, powdered sodium nitrite can be quantitatively input.

[0037] This invention covers any substitutions, modifications, equivalent methods, and solutions made to the essence and scope of this invention. To enable the public to have a thorough understanding of this invention, specific details are elaborated in the following preferred embodiments of this invention. However, those skilled in the art can fully understand this invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits, etc. are not described in detail to avoid unnecessary confusion to the essence of this invention.

[0038] The above description is only a preferred embodiment of this invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of this invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this invention.

Claims

1. An automatic feeding device for solid diazotized fluorobenzene, characterized in that, It includes a feeding component and a reaction kettle. The feeding component is installed on the top of the reaction kettle, and the output port at the bottom of the feeding component is communicated with the inside of the reaction kettle; The feeding component includes a support cylinder. The support cylinder is fixedly connected to the reaction kettle, and the bottom of the support cylinder penetrates through the top of the reaction kettle in a sealed manner. A feeding component is arranged inside the support cylinder. The feeding component includes a cyclone cylinder. The outer wall of the cyclone cylinder is fixedly connected to the inner wall of the support cylinder. A suction air pipe is fixedly installed at the top of the cyclone cylinder, and the suction air pipe penetrates through one side of the support cylinder; A crushing mechanism is arranged at the top of the support cylinder. The crushing mechanism includes an execution member. A material receiving cylinder is installed at the bottom of the execution member. A bottom cylinder is fixedly installed at the bottom of the material receiving cylinder. A discharge funnel is fixedly installed on the inner wall of the bottom of the bottom cylinder. There are six groups of the discharge funnels, and they are arranged in a circumferential array. The bottoms of the six groups of discharge funnels all penetrate through the bottom of the bottom cylinder. The bottom of the bottom cylinder is fixedly connected to the top of the support cylinder; A funnel-shaped material tray two is fixedly installed at the top of the material receiving cylinder. A conduit hole two is opened on the peripheral wall of the funnel-shaped material tray two. A chassis is fixedly installed on the inner wall of the bottom of the material receiving cylinder. A plurality of feed pipes are fixedly installed on the outer peripheral wall of the top of the chassis, and the number of the feed pipes is the same as the number of the conduit holes two. The feeding component can transport powdery materials; The execution member includes a crushing cylinder. A feeding channel is opened on the side wall of the top of the crushing cylinder. A funnel-shaped material tray one is fixedly installed at the bottom of the crushing cylinder. A conduit hole one is opened on the peripheral wall of the funnel-shaped material tray one. There are a plurality of the conduit holes one, and they correspond to the conduit holes two one by one. A motor is fixedly installed at the top of the crushing cylinder. A crushing rod is rotatably connected to the inner wall of the top of the crushing cylinder, and the output end of the motor is fixedly connected to the end wall of the crushing rod. The crushing mechanism can crush solid nodular materials.

2. The automatic feeding device for solid diazotized fluorobenzene according to claim 1, wherein There are a plurality of the conduit holes two, and they are evenly distributed on the peripheral wall of the funnel-shaped material tray two.

3. The automatic feeding device for diazotized fluorobenzene solid according to claim 2, wherein One side wall of the funnel-shaped material tray one is fixedly connected to the top of the funnel-shaped material tray two by bolts. A conduit is fixedly installed on the inner wall of the conduit hole one. The outer wall of the conduit is fixedly connected to the inner wall of the corresponding conduit hole two.

4. The automatic feeding device for solid diazotized fluorobenzene according to claim 3, characterized in that, The crushing blades at the bottom of the crushing rod are in movable contact with the inner wall of the funnel-shaped material tray one. A plurality of regularly arranged triangular grooves are opened on the crushing blades at the bottom of the crushing rod.

5. The automatic feeding device for solid fluoro benzene diazotization according to claim 4, characterized in that, The top of the feed pipe is fixedly connected to the corresponding conduit. The bottom of the feed pipe penetrates through the chassis. The top of the discharge funnel is communicated with the bottom pipe orifices of the corresponding four feed pipes.

6. The automatic feeding device for solid fluorobenzene diazotization according to claim 5, characterized in that A heating plate is fixedly installed on the inner wall of the top of the funnel-shaped material tray two. An inner spiral heating wire is fixedly installed at the center of the top of the chassis. An outer spiral heating wire is fixedly installed on the outer side of the inner wall of the bottom of the material receiving cylinder. Neither the outer spiral heating wire nor the inner spiral heating wire is in contact with the feed pipe.

7. The automatic solid feeding device for fluorobenzene diazotization according to claim 6, characterized in that, An aggregate cylinder is fixedly installed at the bottom of the cyclone cylinder. A metering solenoid valve is fixedly installed at the bottom orifice of the aggregate cylinder, and the valve orifice of the metering solenoid valve is communicated with the inside of the reaction kettle. A wind blocking block is fixedly installed on the inner wall of the top of the aggregate cylinder, and the wind blocking block is located at the center of the bottom of the cyclone cylinder.

8. The automatic feeding device for diazotized fluorobenzene solid according to claim 7, characterized in that, An aggregate cover is fixedly installed at the bottom of the bottom cylinder, and the bottom barrel openings of the discharging funnels are all located inside the aggregate cover. A material conveying pipe is fixedly installed at the bottom of the aggregate cover. The top pipe orifice of the material conveying pipe is communicated with the inside of the aggregate cover. The bottom pipe orifice of the material conveying pipe fixedly penetrates through one side of the cyclone cylinder and is communicated with the inside of the cyclone cylinder.

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